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Condition (MeSH)

Gastroesophageal Reflux

ClinicalTrials.gov lists 1,250 trials for Gastroesophageal Reflux or a narrower condition beneath it. AstraZeneca has the most among industry and government lead sponsors, with 91.

MeSH D005764 Digestive System Diseases C06
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Phase 1 Phase 1 80 Phase 1/2 Phase 1/2 10 Phase 2 Phase 2 63 Phase 2/3 Phase 2/3 14 Phase 3 Phase 3 115 Phase 4 Phase 4 126 Not applicable Not applicable 475 Observational Observational 365 Phase 1 Phase 1 80 Phase 1/2 Phase 1/2 10 Phase 2 Phase 2 63 Phase 2/3 Phase 2/3 14 Phase 3 Phase 3 115 Phase 4 Phase 4 126 Not applicable Not applicable 475 Observational Observational 365

Trials per phase (log scale)

1 more section with rows

1,169 of the 1,250 trials are tagged with Gastroesophageal Reflux itself; the rest are tagged with a narrower condition beneath it.

Get the Gastroesophageal Reflux report as a PDF

The PDF carries up to 50 rows of each section, where the page shows the first few, with the sources listed. Enter a work email and confirm it from the message we send, and the report follows by email.

When did Gastroesophageal Reflux trials start? (32)

Shown in this order: most recent first, 1990 onwards. 2026 is partial: trials registered with a 2026 start date so far, not a full year. 2 trials are registered to start in 2027 or later, and not listed here.

Trials over time, by phase

  • Phase 1
  • Phase 1/2
  • Phase 2
  • Phase 2/3
  • Phase 3
  • Phase 4
  • Not applicable
  • Observational

Top of scale: 66

1995: 3 trials (Observational 2, Not applicable 1) 1996: 1 trials (Not applicable 1) 1997: 1 trials (Not applicable 1) 1998: 2 trials (Not applicable 1, Phase 3 1) 1999: 2 trials (Observational 2) 2000: 3 trials (Observational 1, Not applicable 1, Phase 3 1) 2001: 11 trials (Observational 1, Not applicable 3, Phase 4 1, Phase 3 5, Phase 2/3 1) 2002: 13 trials (Observational 1, Not applicable 2, Phase 4 8, Phase 3 1, Phase 2 1) 2003: 18 trials (Observational 2, Not applicable 5, Phase 4 5, Phase 3 4, Phase 2/3 1, Phase 2 1) 2004: 30 trials (Observational 9, Not applicable 6, Phase 4 5, Phase 3 8, Phase 2 2) 2005: 43 trials (Observational 5, Not applicable 11, Phase 4 10, Phase 3 9, Phase 2/3 1, Phase 2 3, Phase 1 4) 2006: 61 trials (Observational 11, Not applicable 11, Phase 4 12, Phase 3 16, Phase 2/3 2, Phase 2 4, Phase 1 5) 2007: 50 trials (Observational 21, Not applicable 10, Phase 4 7, Phase 3 4, Phase 2 4, Phase 1 4) 2008: 61 trials (Observational 21, Not applicable 11, Phase 4 4, Phase 3 7, Phase 2/3 4, Phase 2 4, Phase 1/2 2, Phase 1 8) 2009: 50 trials (Observational 19, Not applicable 11, Phase 4 3, Phase 3 7, Phase 2 5, Phase 1 5) 2010: 66 trials (Observational 29, Not applicable 15, Phase 4 3, Phase 3 4, Phase 2/3 2, Phase 2 8, Phase 1/2 1, Phase 1 4) 2011: 34 trials (Observational 14, Not applicable 11, Phase 4 3, Phase 3 5, Phase 1 1) 2012: 48 trials (Observational 13, Not applicable 19, Phase 4 4, Phase 3 5, Phase 2 5, Phase 1/2 1, Phase 1 1) 2013: 60 trials (Observational 9, Not applicable 21, Phase 4 7, Phase 3 10, Phase 2 6, Phase 1/2 1, Phase 1 6) 2014: 48 trials (Observational 14, Not applicable 18, Phase 4 8, Phase 3 2, Phase 2 1, Phase 1 5) 2015: 40 trials (Observational 11, Not applicable 20, Phase 4 4, Phase 3 2, Phase 2/3 1, Phase 2 1, Phase 1 1) 2016: 53 trials (Observational 10, Not applicable 30, Phase 4 5, Phase 3 3, Phase 2/3 1, Phase 2 3, Phase 1/2 1) 2017: 51 trials (Observational 15, Not applicable 19, Phase 4 7, Phase 3 1, Phase 2 2, Phase 1/2 1, Phase 1 6) 2018: 50 trials (Observational 21, Not applicable 17, Phase 4 3, Phase 3 5, Phase 2 1, Phase 1 3) 2019: 44 trials (Observational 12, Not applicable 24, Phase 4 5, Phase 3 1, Phase 2 1, Phase 1 1) 2020: 46 trials (Observational 19, Not applicable 18, Phase 4 1, Phase 2 2, Phase 1/2 1, Phase 1 5) 2021: 60 trials (Observational 22, Not applicable 27, Phase 3 1, Phase 2 2, Phase 1/2 1, Phase 1 7) 2022: 62 trials (Observational 16, Not applicable 36, Phase 4 1, Phase 3 2, Phase 2 1, Phase 1/2 1, Phase 1 5) 2023: 58 trials (Observational 19, Not applicable 26, Phase 4 5, Phase 3 2, Phase 2 2, Phase 1 4) 2024: 49 trials (Observational 14, Not applicable 27, Phase 4 5, Phase 3 1, Phase 2 1, Phase 1 1) 2025: 65 trials (Observational 19, Not applicable 34, Phase 4 4, Phase 3 4, Phase 2/3 1, Phase 1 3)

Trials registered with a start date in each year, 1990 onward, stacked by phase (complete years only; the current partial year is in the table's notes). The table below lists the same counts, most recent years first.

Trials started per year
Year Trials started
2026 (partial year) 44
2025 65
2024 49
2023 58
2022 62
2021 60
2020 46
2019 44
2018 50
2017 51

Forecast of the full-year count, planned starts included, not rows of this table: about 56 trials starting in 2026 and about 58 in 2027, the average of the 24 months through September, counted as registered and carried forward, with about 0.7 times the starts already registered for the rest of 2026 added. The rows of this table count trials registered so far with a start date in the year, planned starts included; the forecast looks ahead to the count for the whole year, so it is not the same measure. In backtests on conditions of this size, forecasts made part-way through the year were typically off by about 15 percent and ran about 1 percent high against the count later registered; forecasts made before the year began were off by about 26 percent and ran about 20 percent low against the count later registered. The part-way figures are from forecasts that used a multiple fitted only on earlier years. These figures rest on a few years of history (target years from 2018 to 2025, varying by figure), place each condition as it is mapped today rather than as it was then, and score against a count for the newest year that was still being revised. Only condition series were scored.

Prediction, not a registry value: median of 36 months from start to primary completion across 70 trials still running at the 2026-10-09 snapshot; registered median of 19 months across 761 trials with a primary completion typed Actual. Source: ClinicalTrials.gov / AACT (CTTI), public domain.

What phase are Gastroesophageal Reflux trials in? (9)

Shown in this order: phase order.

Show the trials by phase as a table
Trials by phase
Phase Trials
Phase 1 80
Phase 1/2 10
Phase 2 63
Phase 2/3 14
Phase 3 115
Phase 4 126
Not applicable 475
Observational 365
Expanded access 2

How many Gastroesophageal Reflux trials are recruiting? (10)

Shown in this order: the order a trial moves through, from not yet recruiting to unknown.

Trials by recruitment status
Status Trials
Not yet recruiting 47
Recruiting 113
Enrolling by invitation 16
Active, not recruiting 30
Completed 729

Status as registered on ClinicalTrials.gov. Each trial is counted once.

Which lead sponsors run the most Gastroesophageal Reflux trials? (5)

Shown in this order: most trials first. Lead sponsors the registry classes as industry, NIH, US federal, other government or network. A hospital or university the registry files as government can appear here. Sponsors it classes as academic or other are shown on the full page, because that class cannot separate an institution from a named investigator.

Lead sponsors
Sponsor Trials
AstraZeneca 91
Takeda 31
Chong Kun Dang Pharmaceutical 10
Edwards Lifesciences 8
Eisai Inc. 8

Which drugs are being tested for Gastroesophageal Reflux? (7)

Shown in this order: most trials first. One row per drug, matched to a single molecule under all its names, ranked by number of trials.

Drugs tested
Drug Trials
E3810 43
Omeprazole 20 mg 36
Magnesium Pantoprazole 31
Lesogaberan 10
BLI5100 9

Interventions as named in the registry (8)

Shown in this order: most trials first.

Interventions as named in the registry
Drug Trials
Nexium Pill 94
lansoprazole OD 29
Dexlansoprazole MR 25
Vonoparazan 13
PPI 9

These are the names sponsors entered on ClinicalTrials.gov that we have not matched to a single molecule. Some are drugs under a brand or code name; others are procedures, doses or arm labels.

Which serious adverse events do Gastroesophageal Reflux trials report? (10)

Shown in this order: most subjects affected first. Subjects affected summed across trials, a cross-trial signal, not a rate.

Serious adverse events in this condition's trials
Adverse event Subjects affected Trials
Heart Failure 102 1
Arrhythmia 95 4
Anemia 87 3
Pleural Effusion 78 3
Breathing abnormalities 77 1

Which publications cover Gastroesophageal Reflux? (1,469)

Shown in this order: major-topic papers first, then newest, then most linked to trials.

Sub-conditions in MeSH (2)

MeSH descendants one level down with at least one trial, most trials first.

Not on this page

Not measured: delivery record.

Checked, with nothing recorded for this condition: prevalence and rare-disease identity.

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